of auburn



@uiten faire istmt ffice.

vHENRY J. oAsE, or AUBURN, NEW YORK, AssIeNoRTo HENRY RICHARD- SON, 0E 'SAME PLACE.

Leners Parent No. 80,596, ma August 4,1868.

IMPROVEMENT IN GLAMPING lKNIVES ORGlgTTERS OF MOWING-MAGHINES WHILE BEING tige ,Stimuli referat tu in ttm Eaters gnent mit nmkiugprrt ni tige same.

To -ALL WHoiM'rtiA MAY coNoERN;

Be it known thatI, HENRY J'. CASE, ofAuburn, in the county o f' Cayuga, and State of New York,'have invented certain new .and useful Improvements in Clamping the Bars of Reaping-Machinesfor the Purpose of Grinding the Sickle-Sectionsior Cutters; and I do hereby declare the following to bea full, clear, and exact description of the same, reference being'had to the accompanying drawings, making a part of this specification, in whichl J Figure 1 represents the clampinglbar-and sickle inelevation, withthedevices attached for operating the clamps.

Figure 2 represents a top plan ofthe same. l

Figure 3 represents one of the clamping-hooks detached. l

SimilarI letters ofreferenee, where they occur in the separate figures, denotejlike Aparts in'all of t'hem. My-invention relates to a cheap and simple way ofclamping and unelamping a reaper-bar to'and from the 'rolling or hinged har, by which the sections or cutters` on said reaper-bar are properly and successively brought to and moved from the grinding-stone or wheel.

To4 enable others skilled in the art to make and'use myinvention, Iwill proceed to describe the same, with reference tothe drawings. A i

The-bar A, to whichthe sickle or sickle-bar B is clamped, may have journals au upon it, so that it may roll in the swing-frame,l by WhichA it is moved to or from the grinding-wheel or stone. In or to the bar A are pivoted; three clamps b b' b2, which are connected together by rods ec. The opposite ends of these clamps from those that are'connected by therods c, are bent horizontally, as seen at d, iig. 2, and their extreme bent ends are turned up ver'tically, as seen at e,'ig. 3. The shank of the clamp bis round, and may have a friction roller upon it, it" found desirable. This rounded shank passes through an eccentric slot, f, in a cam-lever, c,

that is pivoted to the roller-barat g, so that, by working said lever c, the series of clamps is brought .tight up against the sickle and firmly holds it to thebar A. By reversing theI action of the lever, the sickle is as readily unclamped, and canbe moved along on the bar A. The clamps serve as a support' for the sickle whilst it is shiftedalong-to bring thes'eetions successively and in right position to the grinder;

, Though the force that does the clamping is applied through the rods e e, yet the clampsbind against the sickle or cutters in a direction Yat right angles to the line of the rods. V'lhis is done by the peculiar shapc'of the clamps themselves; and the expedition with which the sickle or sickle-bar is clamped and released, makes it a very valuable acquisition in grinding sickle-sections. Having thus fully' described the nature of myv invention,'-what I claim therein as new, anddesire to secure by Letters Patent,.is-

I n combination with `the clamping and holding-barA,the'series'of clampinghooks, actuated through a 4common lever for fastening andreleasingthe reaper-bar or sickle, substantially in the manner and'for the pur- .pose described.

i HENRY J. CASE.

Witnesses.

HORACE T. Coon', CEAS. RICHARDSON. 

